EP 1067672 B1 20041201 - Dielectric Resonator Oscillator
Title (en)
Dielectric Resonator Oscillator
Title (de)
Oszillator mit dielectrischem Resonator
Title (fr)
Oscillateur hyperfréquence à résonateur diélectrique
Publication
Application
Priority
FR 9908458 A 19990701
Abstract (en)
[origin: EP1067672A1] The super-high frequency oscillator comprises at least two active elements (40,42), in particular amplifiers, and a dielectric resonator (44), where the coupling between the active elements and the dielectric resonator is of a transmission type. The inputs of neighbouring active elements are connected to the first coupling point (48), and the outputs of active elements are connected to the second coupling point (46). The waves in lines (54,56) ended at the first coupling point (48) are in opposition, as well as the waves in lines (50,52) ended at the second coupling point (46). The active elements (40,42) are practically identical, and the lengths of lines connecting the first coupling point (48) to the inputs of active elements are practically equal; the lengths of lines connecting the second coupling point (46) to the outputs of active elements are substantially equal. The oscillator comprises an even numbr of active elements, in particular 2 or in the second embodiment 4, associated with a unique resonator (44). Each active elemetn comprises an amplifier. The resonator is of circular, that is of disc form, and the coupling points (46,48) are diametrically opposite with respect to the resonator (44). The resonant frequency of dielectric resonator is chosen so that the oscillator operates at a frequency in the range 10-15 GHz. Quarter-wavelength lines are connected at first and second coupling points so as to have short-circuits or virtual grounds at the ports, and the distance between the coupling points and the resonator is adjusted to minimize the feedback while maintaining the oscillations. The quarter-wavelength lines can be removed, and other active elements connected.
IPC 1-7
IPC 8 full level
H03B 5/18 (2006.01)
CPC (source: EP US)
H03B 5/1876 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1067672 A1 20010110; EP 1067672 B1 20041201; AT E284090 T1 20041215; DE 60016320 D1 20050105; DE 60016320 T2 20051201; FR 2795887 A1 20010105; FR 2795887 B1 20011005; JP 2001044755 A 20010216; US 6297707 B1 20011002
DOCDB simple family (application)
EP 00401631 A 20000608; AT 00401631 T 20000608; DE 60016320 T 20000608; FR 9908458 A 19990701; JP 2000198131 A 20000630; US 59944100 A 20000622